That used to drive me mad when I worked in A&E. I was forever telling the ambulance guys to drive into the side of the cars! One day some woman came up to the desk moaning that she was parked in the disabled bay and some car had blocked her in. I pointed out that she was actually in the "emergency staff" space. Turned out the car belonged to our consultant who had been called in (in was a Sat) to deal with a peadiatric resus, he was willing to go out and move the car, but I told him not to and went back to the woman and took great pleasure in telling her it would be at least an hour before she was going anywhere!